http://book.klll.cc/ebooks/subject/24831.opds?sort_order=release_date 2025-08-05T18:10:29Z Books about Laboratories -- Juvenile fiction (sorted by release date) Free eBooks since 1971. Project Gutenberg https://book.klll.cc webmaster@gutenberg.org https://book.klll.cc/gutenberg/favicon.ico 25 1 2025-08-05T18:10:29Z https://book.klll.cc/ebooks/subject/24831.opds?sort_order=title Sort Alphabetically by Title 2025-08-05T18:10:29Z https://book.klll.cc/ebooks/subject/24831.opds?sort_order=downloads Sort by Popularity 2025-08-05T18:10:29Z https://book.klll.cc/ebooks/53214.opds The Mystery of the Fifteen Sounds Van Powell 2025-08-05T18:10:29Z https://book.klll.cc/ebooks/43904.opds Mystery Wings Roy J. Snell